Design - Lindab SDJR-S Technical Manual

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Smoke Control Damper

2. Design

2.1. Design with actuating mechanism
Design .44 and .54
Belimo actuators are used for dampers, series BEN, BEE, BE for 230V AC resp. 24V AC/DC.
After connection to the power supply voltage, the actuator moves the damper blade to the "OPEN" position or "CLOSED"
(according to the corresponding connection, see wiring diagram). If the power supply is interrupted, the actuator stops at the
current position. The signalling of the "OPEN" and "CLOSED" damper blade positions is ensured by two built-in fixed "poten-
tial-free" end- limit switches.
The actuator for operating the damper blade is mounted in an insulated cover/box. It is accessible after removing the cover
lid. The electrical connection of the actuator is made with a non- flammable cable (or a cable located in the adjoining cable
duct), which passes through an opening made in the wall of the insulated cover/boxwhen installing the damper or when con-
necting the actuator power cable. The cable entry must meet a minimum fire resistance of 30 minutes.
Fig.1 Damper SDJR-S - actuating mechanism in the cover
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Lindab reserves the right to make changes without prior notice
Last modified: 2021-09-03
Rev: 2021-03-26
SDJR-S